Warming stimulates cellulose decomposition by recruiting phylogenetically diverse but functionally similar
Yifan Su1,2, Xue Guo3, Yamei Gao4
1Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, 518071, Shenzhen, China.
ISME Communications
|March 11, 2025
Summary
Global warming accelerates cellulose decomposition in prairies by influencing microorganisms. This study reveals how warming impacts microbial traits and enhances soil carbon cycling predictions.
Area of Science:
- Microbiology
- Ecology
- Biogeochemistry
Background:
- Cellulose, abundant in plant litter, is vital for terrestrial carbon cycling.
- The impact of global warming on cellulose-decomposing microorganisms remains largely unknown.
Purpose of the Study:
- To investigate the effects of +3°C warming on cellulose decomposition in a tallgrass prairie ecosystem.
- To characterize cellulose-associated microbial communities and their functional genes under warming conditions.
Main Methods:
- A 3-year litterbag experiment was conducted in a tallgrass prairie.
- Microbial community composition, functional gene abundances, and soil respiration were analyzed.
- Genomic traits of bacteria were assessed to infer growth rates.
Main Results:
- Warming significantly increased soil respiration by 32.3% and accelerated cellulose mass loss.
- Relative abundances of carbon decomposition genes increased under warming.
- Bacteria in litterbags exhibited higher growth-related genomic traits compared to bulk soil.
Conclusions:
- Warming stimulates microbial activity and soil carbon decomposition, supporting a trait-centric view for ecosystem modeling.
- Characterizing cellulose-decomposers aids in predicting soil carbon dynamics under future climate scenarios.
Related Concept Videos
01:02Role of Microtubules in Cell Wall Deposition
2.3K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.3K
00:46Bioremediation
18.1K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.1K
01:15Cellulose and Pectic Polysaccharides
3.4K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.4K